Some dashboard default to only include Pledge Balances even when you select that you want to include Pledges. Every dashboard should have an option for you to include Pledges or Pledge Balances. Otherwise, if this is not possible, every dashboard report should have a description that indicates if it only includes Pledge Balances.
Very logical suugestion. The dashboard is missing a very obvious facility-to allow you to see how close to your campaign goal you are.